New energy heavy truck bottom frame structure and vehicle

Abstract

The invention discloses a new energy heavy truck bottom frame structure and a vehicle, and belongs to the technical field of new energy trucks, the bottom frame structure comprises a frame assembly defined by a plurality of framework cross beams, framework longitudinal beams and framework stand columns, and the frame assembly comprises a first frame and a second frame which are connected; framework cross beams at the lower parts of the first framework and the second framework are provided with skin mounting brackets, cross beams and longitudinal beams at the lower part of the first framework are provided with storage battery mounting bottom plates, and framework longitudinal beams at the lower part of the first framework are provided with electric air compressor assembly mounting brackets; a framework cross beam at the upper part of the first framework is provided with a high-voltage box mounting bracket and a five-in-one controller mounting bracket; a cooling unit mounting bracket is arranged on the second upper framework longitudinal beam, a steering pump mounting bracket is arranged on the first upper framework longitudinal beam, and a water pump mounting bracket is arranged on the second lower framework longitudinal beam. Compact arrangement of parts can be achieved, the overall strength of a vehicle is guaranteed, and installation and follow-up maintenance are facilitated.

Description

Technical Field

[0001] This invention belongs to the field of new energy truck technology, and particularly relates to a bottom frame structure and vehicle for a new energy heavy truck. Background Technology

[0002] Traditional new energy heavy trucks have components such as batteries, motor controllers, five-in-one controllers, electric air compressors, and steering pumps arranged at the bottom of the cab. These components need to be stacked in multiple layers. The components in the middle layer are extremely difficult to maintain. Both the upper and lower layer components need to be fixed with special structures. The special structural components for the upper layer components need to be fixed on the upper wing surface of the frame, while the special structural components for the lower layer components need to be fixed on the longitudinal surface of the frame with a long cantilever structure. This arrangement results in weak strength and complex structure of the special structural components. In addition, each component needs to be equipped with a special structural component for fixation, resulting in low space utilization and high cost and weight of structural components. Summary of the Invention

[0003] The purpose of this invention is to provide a bottom frame structure and vehicle for new energy heavy trucks, in order to solve the problem that existing cab bottoms often use special structural components for stacking and installing parts, resulting in a complex overall structure and inconvenient parts maintenance.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows:

[0005] In a first aspect, the present invention provides a bottom frame structure for a new energy heavy-duty truck, comprising:

[0006] The frame assembly is a three-dimensional frame formed by several skeleton crossbeams, skeleton longitudinal beams, skeleton columns and support longitudinal beams. The frame assembly includes a first frame and a second frame connected to each other.

[0007] Several skin mounting brackets for installing the skin assembly are installed on the lower frame crossbeams of the first and second frames. A battery mounting base plate for battery installation is provided on the lower frame crossbeam of the first frame. The electric air compressor assembly is installed into the interior of the first frame through the electric air compressor assembly mounting bracket on the lower frame longitudinal beam. The high-voltage box and the five-in-one controller are installed on the top of the first frame through the high-voltage box mounting bracket and the five-in-one controller mounting bracket on the upper frame crossbeam of the first frame, respectively. A cooling unit mounting bracket for installing the cooling unit is provided on the second upper frame longitudinal beam of the second frame. A steering pump mounting bracket for installing the steering pump is provided on the first upper frame longitudinal beam of the second frame. A water pump mounting bracket for installing the water pump is provided on the first lower frame longitudinal beam of the second frame.

[0008] The frame assembly is installed inside the vehicle frame assembly. The frame assembly has an integrated frame welding bracket in the middle of the frame column for mounting the suspension pad assembly. The frame assembly is connected to the vehicle frame assembly through the suspension pad assembly.

[0009] The first frame's uprights, crossbeams, and longitudinal beams are all made of channel steel, and the thickness of the first frame's uprights and longitudinal beams is greater than the thickness of the first frame's crossbeams.

[0010] The second frame's uprights, crossbeams, and longitudinal beams are all made of angle steel.

[0011] The first frame and the second frame share a set of skeleton columns and skeleton longitudinal beams. The first frame and the second frame have the same width and parallel bottom surfaces, and the first frame is higher than the second frame.

[0012] The skin assembly includes a bottom skin located at the bottom of the first frame and the second frame, a first side skin on the side of the first frame, and a second side skin on the side of the second frame. The skin assembly is used to fill the gap between the vehicle frame assembly and the frame assembly. The first side skin has an outward protrusion structure, which is directly opposite the mounting position of the electric air compressor.

[0013] The upper end of the frame column is equipped with a lifting lug.

[0014] The battery mounting base plate is detachably connected to the bottom frame crossbeam and frame longitudinal beam of the first frame by bolts, and several interconnected batteries are arranged on the battery mounting base plate.

[0015] Secondly, the present invention provides a vehicle in which the bottom of the driver's cab is provided with the aforementioned new energy heavy truck bottom frame structure.

[0016] Beneficial effects: The bottom frame structure of the new energy heavy truck of the present invention uses channel steel and angle steel of different sizes for splicing, which not only meets the strength requirements for component installation, but also minimizes the weight of the frame and reduces costs; the layered frame structure realizes the compact arrangement and aesthetics of the components, and facilitates installation and subsequent maintenance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the bottom frame structure of the new energy heavy truck of the present invention;

[0018] Figure 2 This is a top view of the bottom frame structure of the new energy heavy truck of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the bottom parts of the new energy heavy truck after installation.

[0020] In the diagram, 1-frame assembly; 2-chassis assembly; 3-skin assembly; 4-battery; 5-electric air compressor assembly; 6-high voltage box; 7-five-in-one controller; 8-cooling unit; 9-water pump; 10-steering pump;

[0021] 11-First frame; 12-Second frame; 13-Suspension pad assembly; 14-Skin mounting bracket; 15-Battery mounting base plate; 16-High voltage box mounting bracket; 17-Five-in-one controller mounting bracket; 18-Cooling unit mounting bracket; 19-Water pump mounting bracket; 20-Lifting lug; 21-Steering pump mounting bracket; 22-Electric air compressor assembly mounting bracket;

[0022] 31- Bottom skin; 32- First side skin; 321- Outwardly convex structure; 33- Second side skin;

[0023] 1111-First frame column; 1112-Second frame column; 1113-Third frame column; 1114-Fourth frame column; 1121-First upper frame crossbeam; 1122-First lower frame crossbeam; 1131-First upper frame longitudinal beam; 1132-First lower frame longitudinal beam; 1231-Second upper frame longitudinal beam; 1232-Second lower frame longitudinal beam; 1311-Support longitudinal beam. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Example 1

[0026] refer to Figures 1 to 3 As shown, a bottom frame structure for a new energy heavy truck includes: a frame assembly 1 and various component mounting brackets disposed on the frame assembly 1. The frame assembly 1 is a three-dimensional frame formed by several skeleton crossbeams, skeleton longitudinal beams, skeleton columns, and bracket longitudinal beams. The frame assembly 1 includes a first frame 11 and a second frame 12 connected to each other.

[0027] Several skin mounting brackets 14 for mounting the skin assembly 3 are installed on the lower frame crossbeams of the first frame 11 and the second frame 12. The skin mounting method is assembly-type, which facilitates the disassembly of parts in the frame assembly assembly 1 and subsequent disassembly and maintenance. The first side skin 32 and the second side skin 33 are arranged on the lower sides of the frame assembly assembly 1. This arrangement can seal the gap between the lower part of the frame assembly 2 and the lower part of the frame assembly assembly 1, which can reduce the side water ingress of the whole vehicle. The bottom skin 31 is arranged at the lower part of the frame assembly assembly 1 to protect the lower parts of the frame assembly assembly 1. The bottom frame beam of frame 11 is equipped with a battery mounting base plate 15 for installing the battery 4. The battery 4 is installed at the rear of the lower layer of the frame assembly 1. Because the battery 4 is relatively low, there is a large space between the high-voltage box 6 and the battery 4, which can accommodate the high-voltage wiring harness of the high-voltage box 6 and the five-in-one controller 7. The electric air compressor assembly 5 is installed inside the first frame 11 through the electric air compressor assembly mounting bracket 22 on the support longitudinal beam 1311 at the bottom of the first frame 11. Because there is no high-voltage wiring harness under the five-in-one controller 7, the electric air compressor assembly 5 is arranged in the five-in-one controller. The lower part of the controller 7 has ample space to meet the space requirements for the electric air compressor assembly 5 during operation. The high-pressure box 6 and the five-in-one controller 7 are respectively installed on the upper part of the first frame 11 via the high-pressure box mounting bracket 16 and the five-in-one controller mounting bracket 17 on the upper frame crossbeam, facilitating the maintenance of the five-in-one controller 7 and the arrangement and installation of the high-voltage wiring harness. The second upper frame longitudinal beam 1231 of the second frame 12 is provided with a cooling unit mounting bracket 18 for installing the cooling unit 8. The cooling unit 8 is arranged above the water pump 9, which is beneficial for reducing... The length of the vehicle's cooling pipes is reduced, and water resistance is lowered. The first upper frame longitudinal beam 1131 of the second frame 12 is provided with a steering pump mounting bracket 21 for mounting the steering pump 10. The steering pump 10 is located in the middle position between the electric air compressor assembly 5 and the water pump 9. The main purpose is to make the arrangement compact and make full use of the space of the frame assembly assembly 1. The second lower frame longitudinal beam 1232 of the second frame 12 is provided with a water pump mounting bracket 19 for mounting the water pump 9. The water pump 9 is located at the bottom of the frame assembly assembly 1, which helps to reduce the length of the cooling pipes and reduce the risk of flow interruption.

[0028] The frame assembly 1 is installed inside the frame assembly 2. The frame assembly 1 has an integrated frame welding bracket in the middle of the skeleton column for mounting the suspension pad assembly 13. The frame assembly 1 is connected to the frame assembly 2 through the suspension pad assembly 13, which can effectively reduce the torsional force of the frame assembly 2 on the frame assembly 1 and improve the reliability of the frame assembly 1.

[0029] The upper end of the frame column is equipped with a lifting lug 20, which facilitates the hoisting of the frame assembly 1 and subsequent maintenance of parts.

[0030] The frame columns are made of 6mm channel steel, the frame crossbeams of the first frame 11 are made of 4mm channel steel, the frame longitudinal beams of the first frame 11 are made of 6mm channel steel, and the frame crossbeams and longitudinal beams of the second frame 12 are made of 4mm angle steel. The connections of the frame columns, frame crossbeams and frame longitudinal beams are all fixed by welding. CAE simulation analysis shows that the frame structure meets the strength and installation requirements of the parts and can reduce the weight and cost of materials to the greatest extent.

[0031] The skin assembly 3 includes a bottom skin 31 located at the bottom of the first frame 11 and the second frame 12, a first side skin 32 on the side of the first frame 11, and a second side skin 33 on the side of the second frame 12. The skin assembly 3 can fill the gap between the frame assembly 2 and the frame assembly 1 and protect the internal parts. The first side skin 32 is provided with an outward protruding structure 321, which is directly opposite the mounting position of the electric air compressor 5 and is used to avoid the motion envelope of the electric air compressor 5 when it is working.

[0032] The first frame 11 and the second frame 12 share a set of skeleton columns (first skeleton column 1111 and second skeleton column 1112) and skeleton longitudinal beams (first upper skeleton longitudinal beam 1131 and first lower skeleton longitudinal beam 1132). The first frame 11 and the second frame 12 have the same width and parallel bottom surfaces. The first frame 11 is higher than the second frame 12, that is, the height of the non-shared skeleton columns of the second frame 12 is lower than the height of the non-shared skeleton columns of the first frame 11.

[0033] The battery 4 requires frequent maintenance. The battery mounting base plate 15 is detachably connected to the bottom frame crossbeam and frame longitudinal beam of the first frame 11 by bolts. Several interconnected batteries 4 are arranged on the battery mounting base plate 15, which facilitates the direct removal of the battery 4 from below the first frame 11.

[0034] Several support beams 1311 are provided between the first upper frame crossbeam 1121 and the first lower frame crossbeam 1122 of the first frame 11 to improve the overall strength of the first frame and provide support points for the installation of parts. The support beams are arranged parallel to the frame beams.

[0035] Example 2

[0036] A vehicle in which the bottom of the driver's cab is provided with the new energy heavy truck bottom frame structure described in Example 1.

[0037] In summary, the bottom frame structure of the new energy heavy truck of the present invention uses channel steel and angle steel of different sizes for splicing, which not only meets the strength requirements for component installation, but also minimizes the weight of the frame and reduces costs; the layered frame structure achieves compact and aesthetically pleasing arrangement of components, and facilitates installation and subsequent maintenance.

[0038] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A bottom frame structure for a new energy heavy-duty truck, characterized in that, include: The frame assembly is a three-dimensional frame formed by several skeleton crossbeams, skeleton longitudinal beams, skeleton columns and support longitudinal beams. The frame assembly includes a first frame and a second frame connected to each other. Several skin mounting brackets for installing the skin assembly are installed on the lower frame crossbeams of the first and second frames. A battery mounting base plate for battery installation is provided on the lower frame crossbeam of the first frame. The electric air compressor assembly is installed into the interior of the first frame through the electric air compressor assembly mounting bracket on the lower frame longitudinal beam. The high-voltage box and the five-in-one controller are installed on the top of the first frame through the high-voltage box mounting bracket and the five-in-one controller mounting bracket on the upper frame crossbeam of the first frame, respectively. A cooling unit mounting bracket for installing the cooling unit is provided on the second upper frame longitudinal beam of the second frame. A steering pump mounting bracket for installing the steering pump is provided on the first upper frame longitudinal beam of the second frame. A water pump mounting bracket for installing the water pump is provided on the first lower frame longitudinal beam of the second frame.

2. The bottom frame structure of the new energy heavy truck according to claim 1, characterized in that, The frame assembly is installed inside the vehicle frame assembly. The frame assembly has an integrated frame welding bracket in the middle of the frame column for mounting the suspension pad assembly. The frame assembly is connected to the vehicle frame assembly through the suspension pad assembly.

3. The bottom frame structure of the new energy heavy truck according to claim 1, characterized in that, The first frame's uprights, crossbeams, and longitudinal beams are all made of channel steel, and the thickness of the first frame's uprights and longitudinal beams is greater than the thickness of the first frame's crossbeams.

4. The bottom frame structure of the new energy heavy truck according to claim 1, characterized in that, The second frame's uprights, crossbeams, and longitudinal beams are all made of angle steel.

5. The bottom frame structure of the new energy heavy truck according to claim 1, characterized in that, The first frame and the second frame share a set of skeleton columns and skeleton longitudinal beams. The first frame and the second frame have the same width and parallel bottom surfaces, and the first frame is higher than the second frame.

6. The bottom frame structure of the new energy heavy truck according to claim 1, characterized in that, The skin assembly includes a bottom skin located at the bottom of the first frame and the second frame, a first side skin on the side of the first frame, and a second side skin on the side of the second frame. The skin assembly is used to fill the gap between the vehicle frame assembly and the frame assembly. The first side skin has an outward protrusion structure, which is directly opposite the mounting position of the electric air compressor.

7. The bottom frame structure of the new energy heavy truck according to claim 1, characterized in that, The upper end of the frame column is equipped with a lifting lug.

8. The bottom frame structure of the new energy heavy truck according to claim 1, characterized in that, The battery mounting base plate is detachably connected to the bottom frame crossbeam and frame longitudinal beam of the first frame by bolts, and several interconnected batteries are arranged on the battery mounting base plate.

9. A vehicle, characterized in that, The bottom of the vehicle cab is provided with a new energy heavy truck bottom frame structure as described in any one of claims 1 to 8.

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